检测密码 Exercise06_18

 import java.util.Scanner;
 /**
  * @author 冰樱梦
  * 时间：2018年下半年
  * 题目：检测密码
  *
  */
 public class Exercise06_18 {
     public static void main(String[] args){
         Scanner input = new Scanner(System.in);
         System.out.println("输入密码: ");
         String passWord=input.nextLine();
         checkString(passWord);
     }
     public static void checkString(String password){
         int sum=0,s=0;
         if((password.length()>=8)){
             for(int i=0;i<password.length();i++){
                 if((('a'<=password.charAt(i))&&(password.charAt(i)<='z')) || (('A'<=password.charAt(i))&&(password.charAt(i)<='Z')) || (('0'<=password.charAt(i))&&(password.charAt(i)<='9'))){
                     s++;
                     if(('0'<=password.charAt(i))&&(password.charAt(i)<='9')) sum++;
                 }
                 else System.out.println("Invalid Password");
             }
             if((s==password.length())&&(sum>=2)) System.out.println("Valid Password");
         }
         else System.out.println("Invalid Password");
     }
 }